package sy6_3;

import java.math.BigInteger;
import java.math.*;
    class BigIntegerExample
    {
        public static void main(String args[])
        {   BigInteger n1=new BigInteger("987654321987654321987654321"),
                n2=new BigInteger("123456789123456789123456789"),
                result=null;
            result=n1.add(n2);//n1和n2做加法运算
            System.out.println("和:"+result.toString());
            result=n1.subtract(n2);//n1和n2做减法运算
            System.out.println("差:"+result.toString());
            result=n1.multiply(n2);//n1和n2做乘法运算
            System.out.println("积:"+result.toString());
            result=n1.divide(n2);//n1和n2做除法运算
            System.out.println("商:"+result.toString());
            BigInteger m=new BigInteger("1968957"),
                    COUNT=new BigInteger("0"),
                    ONE=new BigInteger("1"),
                    TWO=new BigInteger("2");
            System.out.println(m.toString()+"的因子有:");
            for(BigInteger i=TWO;i.compareTo(m)<0;i=i.add(ONE))
            {  if((n1.remainder(i).compareTo(BigInteger.ZERO))==0)
            {  COUNT=COUNT.add(ONE);
                System.out.print("  "+i.toString());
            }
            }
            System.out.println("");
            System.out.println(m.toString()+"一共有"+COUNT.toString()+"个因子");
        }
    }


